SiteAssessor.com News Blog by Tag : sand

In 2007 when I attended the Onsite Wastewater Course in Tullamore I asked the course lecturers what I thought was a very simple question.The Question was "Is there a direct correlation between a T-Value obtained on a site and the sizing of a sand filter". Unfortunately no one that day was able to answer my question except to state that the EPA 2000 Manual stated that for soil covered sand filters the hydraulic loading should be in the range of 40 - 60 l/m².d.In the cu...
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One of the biggest headaches for Site Assessors/Homeowners and Installers over the last few years was sourcing the required grades of sand for the various sand filters.I heard from various sources that it was nearly impossible to source the correct grades. I asked installers what they did when they couldn’t find the exact grades and invariably the response I got was “we just threw in sand from the local quarry”.Prior to the Code of Practice being published in Oct 2009 I rang ar...
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